Title:
非水電解液リチウムイオン二次電池
Document Type and Number:
Japanese Patent JP7085136
Kind Code:
B2
Abstract:
To provide a nonaqueous electrolyte lithium ion secondary battery being a nonaqueous electrolyte lithium ion secondary battery provided with a wound electrode body and being excellent in resistance against metal lithium deposition and low-temperature output characteristics during repetitive charging and discharging.SOLUTION: A nonaqueous electrolyte lithium ion secondary battery 100 includes: a wound electrode body 20 in which a positive electrode 50, a negative electrode 60 and separators 70 are overlapped and wound; a nonaqueous electrode; and a battery case 30 for housing the wound electrode body 20 and the nonaqueous electrode. The separators 70 have a heat-resistant layer. The heat-resistant layer faces the positive electrode 50. A spring constant in a thickness direction of the positive electrode 50 is 288.4kN/mm or more and 332.5kN/mm or below.SELECTED DRAWING: Figure 1
Inventors:
Hiroe Ishida
Application Number:
JP2018208672A
Publication Date:
June 16, 2022
Filing Date:
November 06, 2018
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M10/0587; H01M4/13; H01M10/0525; H01M10/0566; H01M50/451
Domestic Patent References:
| JP2014137985A | ||||
| JP2018147565A | ||||
| JP2000285966A | ||||
| JP2018055806A |
Foreign References:
| WO2015146024A1 |
Attorney, Agent or Firm:
Makoto Abe
Michiko Oi
Amano Koji
Michiko Oi
Amano Koji
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